How to install OS Tahoe on an external SSD to make a boot drive?

I want to make my new 8TB ssd drive my boot drive. How can I install OS Tahoe on it?


My Mac Studio is running Tahoe.


Thanks in advance!

Mac Studio

Posted on Jan 2, 2026 3:55 PM

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Question marked as Top-ranking reply

Posted on Jan 2, 2026 3:57 PM

This is Apple’s guidance on how to Install macOS on an external storage device and use it as a startup disk - Apple Support


Please see this great user authored tip: Use an external SSD as your startup disk - Apple Community (Thanks, Jack-19!)

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How to install OS Tahoe on an external SSD to make a boot drive?

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